Genuine 78418 Red Safety Knob used on Mr. Heater MH18B Buddy Heaters

• Part #78418

• 27mm Base OD
  
• For Mr. Heater, Heat Star and ENERCO MH18B Big Buddy Heaters with 27mm base stem OD.
  
• Use The 78018 knob for newer style with the smaller shaft base.

• Fits too many models to list.
• If you are unsure, please contact us us with your model andserial number and we will be happy to help.
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This is an original equipment knob.